World Development Indicators (WDI) Online This link opens in a new windowWorld Development Indicators (WDI) is the primary World Bank collection of development indicators, compiled from officially recognized international sources. It includes more than 1100 indicators on population, income, social, economic, financial, natural resources, and environment, covering 210 countries and 18 regional and income groups. Also includes the International Debt Statistics (IDS) database. Data ranges from 1960-present.